(NpOWY[ENIE \FFEKTIWNOSTI SU[KI ZERNAs - (NoSTAP^UK(B,(Nn(B. (Nw(B.s (NnIKOLAJ wASILXEWI^s; (N{A[KIN(B,(Na(B. (Nb(B.s (NaRKADIJ bORISOWI^s; (NkAMINSKIJ(B,(Nw(B. (Nd(B.s (NwALERIJ dMITRIEWI^s ((Nk(B.s (NuROVAJs, 1988)
Keywords: (NzERNOSU[ILKIs; (NsOLODOSU[ILKIs